{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:54:37.345706", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2013-Oct-01_to_2013-Oct-03_56.0_62.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2013100000144}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "October 01 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 03 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 69572.32196028752}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Europe"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 62.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 56.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "56.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 52.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 58.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 61.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 64.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[52.25, 62.5], [52.35, 62.75], [52.25, 63.0], [52.35, 63.25], 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"MultiPolygon", "coordinates": [[[[52.25, 62.5], [52.35, 62.75], [52.25, 63.0], [52.35, 63.25], [52.25, 63.5], [52.35, 63.75], [52.25, 64.0], [52.47, 64.53], [53.0, 64.75], [53.25, 64.65], [53.32, 64.68], [53.47, 65.03], [54.0, 65.25], [54.53, 65.03], [54.7, 64.63], [55.0, 64.75], [55.53, 64.53], [55.68, 64.18], [56.03, 64.03], [56.18, 63.68], [56.25, 63.65], [56.5, 63.75], [56.75, 63.65], [57.0, 63.75], [57.25, 63.65], [57.5, 63.75], [58.03, 63.53], [58.18, 63.18], [58.53, 63.03], [58.75, 62.5], [58.65, 62.25], [58.75, 62.0], [58.53, 61.47], [58.0, 61.25], [57.75, 61.35], [57.5, 61.25], [57.25, 61.35], [57.0, 61.25], [56.75, 61.35], [56.5, 61.25], [56.25, 61.35], [56.0, 61.25], [55.75, 61.35], [55.68, 61.32], [55.53, 60.97], [55.0, 60.75], [54.75, 60.85], [54.5, 60.75], [54.25, 60.85], [54.0, 60.75], [53.75, 60.85], [53.5, 60.75], [53.25, 60.85], [53.0, 60.75], [52.75, 60.85], [52.5, 60.75], [51.97, 60.97], [51.75, 61.5], [51.97, 62.03], [52.32, 62.18], [52.35, 62.25], [52.25, 62.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.378833261934346}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.417815969652024}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-1.2006788689919858, -0.9259092518502712, -1.1188003430226559]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-1.8976994561019183, -1.5733396138192006, -1.8299642321206306]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.74554119378766, -5.268856062257732, -5.239050652910681]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.378833261934346, -5.947738669224918, -5.752471930785077]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.501345693719836, -1.432243962343811, -1.4739645610478995]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6465407960092517, -1.5984223998999476, -1.6192995733743678]}}